frp/models/config/types.go

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2019-11-02 18:20:49 +01:00
// Copyright 2019 fatedier, fatedier@gmail.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package config
import (
"errors"
"strconv"
"strings"
)
const (
MB = 1024 * 1024
KB = 1024
)
type BandwithQuantity struct {
s string // MB or KB
i int64 // bytes
}
func NewBandwithQuantity(s string) (BandwithQuantity, error) {
q := BandwithQuantity{}
err := q.UnmarshalString(s)
if err != nil {
return q, err
}
return q, nil
}
func (q *BandwithQuantity) Equal(u *BandwithQuantity) bool {
if q == nil && u == nil {
return true
}
if q != nil && u != nil {
return q.i == u.i
}
return false
}
func (q *BandwithQuantity) String() string {
return q.s
}
func (q *BandwithQuantity) UnmarshalString(s string) error {
q.s = strings.TrimSpace(s)
if q.s == "" {
return nil
}
var (
base int64
f float64
err error
)
if strings.HasSuffix(s, "MB") {
base = MB
s = strings.TrimSuffix(s, "MB")
f, err = strconv.ParseFloat(s, 64)
if err != nil {
return err
}
} else if strings.HasSuffix(s, "KB") {
base = KB
s = strings.TrimSuffix(s, "KB")
f, err = strconv.ParseFloat(s, 64)
if err != nil {
return err
}
} else {
return errors.New("unit not support")
}
q.i = int64(f * float64(base))
return nil
}
func (q *BandwithQuantity) UnmarshalJSON(b []byte) error {
return q.UnmarshalString(string(b))
}
func (q *BandwithQuantity) MarshalJSON() ([]byte, error) {
return []byte(q.s), nil
}
func (q *BandwithQuantity) Bytes() int64 {
return q.i
}